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Finding the Fourth Proportional to 3,124.53, 4,686.15 and 932.67

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Solution

The fourth proportional to 3,124.53, 4,686.15 and 932.67 is: 1,398.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.53 : 4,686.15 = 932.67 : x
  2. Step 2: Convert to fraction form
    3,124.53/4,686.15 = 932.67/x
  3. Step 3: Cross multiply
    3,124.53x = 4,686.15 × 932.67
  4. Step 4: Simplify right side
    3,124.53x = 4,370,631.52
  5. Step 5: Solve for x
    x = 4,370,631.52/3,124.53
  6. Step 6: Final answer
    x = 1,398.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.